The codebase for the RAS executable model (REM) is currently undergoing updates and further development; expect the next incremental release of REM in late Spring, 2016.

REM is constructed automatically using a newly developed software system, the
Integrated Dynamical Reasoning Assembler (INDRA)
being developed in the Sorger and Pratt labs with funding from the DARPA Big
Mechanism Program.

The current REM prototype was rolled out at the National Cancer Institute’s
first RAS Initiative Symposium in December 2015 at the Frederick National
Laboratory for Cancer Research in Maryland. Potential users of the current
model are invited to suggest corrections or updates to the model, but users are
cautioned that the current release is an early prototype. Contacting the
developers is the best way to learn more.

REM is made available under the MIT License. Users are asked to acknowledge DARPA
grant W911NF-14-1-0397, “Programmatic modelling for reasoning across complex
mechanisms,” Peter Sorger, William Chen and Dexter Pratt PIs.